baber/WOPTO huggingface dataset:
Patent GB-111837-A (GB)
Title: Improvements in or relating to Electrical Transformers and the like.
IPC: H01F27/34
Filed: 1917-10-05
Abstract: 111,837. Siemens - Schuckertwerke Ges. Dec. 2, 1916, [Convention date]. Transformers.-To compensate for the wattless current of a transformer, an extra secondary winding with a separate magnetic circuit is provided and is connected to a condenser. The ends of the core 1 fit in recesses in the circular casing 2. The core carries a primary winding P, a secondary winding S', and the extra secondary winding S<2> connected to the condenser C. A magnetic circuit is formed round the coil S<2> by a strip of sheet iron F, or a number of rings of magnetic material may be arranged round the winding. To expedite saturation, the rings or strips may be shaped as shown in Fig. 2, and material may be used which has an initial permeability of approximately the maximum value. If the useful field path works on the unsaturated part of the curve, the auxiliary path works on the saturated part and vice versa.
Patent GB-1068675-A (GB)
Title: Multiple slide copying machine
Inventor: WEAVER PAUL JOSEPH
IPC: B23B3/28
Filed: 1965-04-05
Abstract: 1,068,675. Copying; machine frames. TRUE-TRACE CORPORATION. April 5, 1965, No. 14424/65. Headings B3B and B3T. In a copying machine tool such as a lathe, an indexible tool turret 25 is mounted on a saddle 18 which is movable on longitudinal slides 16 on the machine frame 10. A number of tool sets, such as 27, are mounted on the turret and are indexible to each work station. Each set included a tool slide 29 on which is mounted a tool carriage 31 with fluid operated motor means 34. The tool carrier carries a tool holder 32 and also a bracket 40 to which is mounted a template holder 41. The template holder is adjustable and carries a template 44a. A tracer valve 60 is mounted on the machine frame 10 and in operation controls the movement of the cutting tool 33 in accordance with the template form. Feed movement of the saddle and turret along the slides 16 on a longitudinal axis 17 is effected by a motor-driven lead screw 19. The axis 17 is parallel with the axis of rotation 14 of the workpiece 13. The tool slide axis 30 is oblique to the axis 14 and 17. A fluid distributer 50 is incorporated with the turret 25 which facilitates the fluid connection to each tool set only when indexed to the work station.
Patent GB-991731-A (GB)
Title: Simulation of pitching moment of aircraft on runway
IPC: G09B9/20
Filed: 1962-04-13
Abstract: 991,731. Electric analogue calculating. CURTISS-WRIGHT CORPORATION. April 13, 1962 [April 13, 1961], No. 14431/62. Heading G4G. [Also in Division B7] An analogue computer for producing flight parameter signals in aircrew training apparatus has means for simulating pitching moment during take-off of an aircraft with a tricycle undercarriage, comprising electrical means for producing a signal that is a function of simulated pitch angle during the initial part of take-off, and for holding the signal constant when the ptich has risen to a value corresponding to nose-wheel liftoff, means producing a signal representing the pitching moment produced by the main landing gear, and means responsive to simulated on-ground/ airborne conditions for controlling the application of the signals to a rate of pitch computer. In the Figure a rate of pitch summing and integrating amplifier 11 receives five input signals, of which that at terminal 20 represents pitching moment due to elevator deflection, derived from a potentiometer 6 connected to a dummy control column 5, to provide a signal modified by potentiometer 12 in the true air speed servo-system 13, 14 and by potentiometer 16 in the altitude servosystem 18, 14<SP>1</SP> (to represent the effect of ambient air density). The signal at terminal 23 is obtained from a potentiometer 22 energized by a potential representing lift and driven by a turbo-prop r.p.m. servo-system 21, 14<SP>11</SP>, to represent pitching moment due to lift and the action of the propeller slipstream. The remaining signals represent pitching moments produced by the undercarriage while on the runway, and are accordingly fed through ganged switches 27, 33, 35 which remove the signals when the simulated aircraft is airborne, by de-energization of relay 28 by the altitude computer. The signal at terminal 34 is proportional to the aircraft weight less the lift, and represents the pitching moment produced by the main landing gear. The signals at terminals 31 and 32 together represent the pitching moment produced by the nose wheel. This is a function of the angle of pitch, and since during the take-off the flight path elevation angle is zero, the angle of attack can be used instead. Accordingly, the output signal of an angle of attack amplifier 24, which signal goes increasingly negative as the pitch angle rises from zero, together with a constant positive signal +E, are fed over switches 27 and 33 respectively to terminals 31 and 32. The variable signal is scaled and is limited by a diode 26 biased by potential divider 25, so that as the angle of attack passes the value corresponding to nose-wheel lift-off, the sum of the signals at terminals 31 and 32 attains and remains at zero.
Patent GB-222538-A (GB)
Title: Improvements in or in connection with drum and cymbal beating devices
IPC: G10D13/00
Filed: 1923-06-01
Abstract: 222,538. Deans, C. June 1, 1923. Drums; cymbals.-A. device for beating a drum comprises a base-plate A to which is pivoted at a<1> either a socket C carrying the drum-stick D<1> or the drum-stick itself, a pedal lever E pivoted at a<2> and carrying a rubber or felt footpad e<1>, a thrust-link or pair of links F, and a return spring G. The base-plate A carries clips a for attaching it to the rim of the drum, and a longitudinally adjustable heel-plate. J. A cymbal-beater h<2>, which may be turned up into inoperative position, may be mounted on the drumstick and adjusted by a screw h.
Patent GB-260647-A (GB)
Title: Improvements in and relating to dyes and dyeing
IPC: C09B9/00
Filed: 1925-06-04
Abstract: 260,647. Wylam, B., Harris, J. E. G., Thomas, J., and Scottish Dyes, Ltd. June 4, 1925. Leuco compounds of vat-dyes, esters of.- Water-soluble derivatives of leuco compounds of vat-dyes are obtained by treating vat-dyestuffs with alkylphosphoric halides or phosphorus oxychloride in presence of a metal and a tertiary base, with or without a diluent. The products can be employed for dyeing or printing cotton, wool, natural and artificial silk, and straw by the methods described in Specifications 245,587 and 247,787. Examples are given according to which products are obtained by acting on the following dyestuffs with methylphosphoric acid dichloride and zinc in presence of pyridine : indanthrone, dimethoxydibenzanthrone, Caledon brilliant purple RR (dichlorisodibenzanthrone) Caledon Red BN (anthraquinone-1 : 2-naphthacridone), and flavanthrone. The application to anthraquinone vat-dyestuffs generally, and to thioindigo, indigo dichlor and dibrom-indigo, and indigoid vat-dyes is also referred to. The zinc may be replaced by other metals such as copper and the pyridine by quinoline or dimethylaniline or their homologues. Specification 248,802 also is referred to.
Patent GB-570156-A (GB)
Title: Means for actuating vehicle windows
IPC: E05F11/48
Filed: 1943-09-06
Abstract: 570,156. Vehicle window regulators. WILMOTBREEDEN, Ltd., and STEPHENSON, C. H. Sept. 6, 1943, No. 14545. [Class 20 (iii)] A regulator for vertically sliding vehicle windows comprises a chain or cord i passing over pulleys and connected to a member j on the sash, the chain, &c., being actuated by a handle movable horizontally on a guide rod a. The device is locked by sorting-pressed friction members c housed in a casing to which the handle is pivotally attached on a cam-shaped spindle f by which the friction members are disengaged from the guide. Springs h are provided to hold the handle in inoperative position. The actuation of the chain, &c., may be effected by a releaseable pawl on the casing and a reciprocating movement of the handle.
Patent GB-1200514-A (GB)
Title: Improvements in machines for grading fruit or other articles
Inventor: HANCOCK JOHN CHARLES
IPC: B07B13/00
Filed: 1968-03-26
Abstract: 1,200,514. Classifying articles. J. C. HANCOCK. 26 March, 1968, No.14587/68. Heading B2H. Articles of irregular shape and different weights, e.g. fruits and vegetables, are graded by projecting each article upwardly along a trajectory, the maximum height reached by an article, which is inversely proportional to its weight, being used as the grading scale, and collecting each article at or just past the apogee of its trajectory. In the aparatus shown in Fig. 1, articles to be. graded are fed into an adjustably inclined hopper 30. The hopper may comprise a camoperated slider floor 32, Fig. 5, which feeds the articles progressively onto aligning means 33. Alternatively, an inspection table may be provided between the hopper and the aligning means. The table may include infeed fingers 52, Fig. 20, which pass through slots in the floor of the hopper and propel the articles on to the inspection area which comprises a series of spheres 50 mounted on transverse rotatable shafts (not shown) whereby each article is caused to rotate successively about different axes of rotation to provide complete scanning of its surface. The aligning means comprises one or more pairs of rollers 33, the rollers of each pair of pairs being contra-rotating. The rollers 33 spread the articles A in a line, each article of the line being successively directed into a respective static basket 35, Fig. 8, consisting of upwardly curved fingers. To each basket 35 is associated a singularising means consisting of a basket 37, Fig. 10, having V-shaped tines adapted to move between the fingers of the basket 35. The basket 37 is mounted on a rod 38 at the end of a lever 39 which is actuated by a crank so as to cause the basket 37 to transfer the respective article A from the basket 35 to a basket 40 at one end of a grading arm 41, Fig. 13, which is pivot able to the apparatus frame and adapted to be moved upwardly by the action of a spring 42 tensioned between its other end and an adjustable lever 42 mounted on the apparatus frame. The arm 41 is normally retained in the horizontal position by a pawl 43 which is released at an appropriate part of the cycle 'of operation of the apparatus by a crank connected to a drive mechanism so that it is moved upwardly under the action of the spring 42 to project the respective article along a parabolic trajectory at or just past the apogee of which it is caught into one of a series of canvas chutes 45 adjustably mounted by means of gimbal hangers 46, Fig. 17, on inclined frame members 25. The graded articles are then conveyed by their respective chutes 45 down discharge planes 49 into respective bins. (For Figures see next page)
Patent GB-491003-A (GB)
Title: Improvements in or relating to electric brake regulating apparatus for spinning or twisting machines
IPC: D01H1/30
Filed: 1936-11-18
Abstract: 491,003. Drag arrangements for spinning &c. machines. NICKEL, M. Nov. 18, 1936, Nos. 14608/38, (divided out of 490,923), and 22691/38. Convention dates, Nov. 19, 1935 and Oct. 12, 1936. [Class 120 (ii)] [Also in Group XXXV] Electric drag arrangements for spinning and twisting machines wherein the yarn is twisted and wound by the relative rotation of co-operaating parts, such as a flyer, and a spindle, bobbin or cop, are supplied with current the voltage of which is adjusted in accordance with the speed of the driven part, the diameter of winding, and the tension of the yarn. As shown in Fig. 1, the flyer motors 3<1> are suppled by a generator 3 driven by the main motor 4, and the spindledrag coils 20 are supplied by a generator 9 driven by a constant speed motor 13. The current of the field winding 10 of the generator 9 is adjustable by a regulator 12 in accordance with the diameter of winding, and is fed from a generator 11 driven by the motor 13 and having two separate field windings 8, 14, the latter being for self-excitation and the former supplied by an auxiliary generator 7 driven in accordance with the flyer speed by a motor 6. Modifications are described wherein, Fig. 2 (not shown), a second auxiliary generator driven by the motor 13 is arranged in series with the generator 7 so that the winding 8 assists the winding 14 at low speeds and opposes it at higher; wherein, Fig. 3 (not shown), the winding 8 is connected to the armature of the generator 11 ; wherein, Fig. 4 (not shown), the generator 9 is provided with a second field winding supplied from the generator 11 and controlled by a regulator connected with the brush-adjustment gear of the main motor 4 ; and wherein, Fig. 5 (not shown), the generator 7 controls a resistance in the circuit of the winding 8. An additional control in accordance with the tension of the yarn is effected by the arrangement shown in Fig. 7, wherein a field winding 14<1> of the generator 11 is controlled by a hand regulator 31 which can be short-circuited by a relay contact 33, 34 controlled by Tirrill regulator 40, 42 and an arm 38 engaged by the yarn. The regulator is supplied from the mains with alternating current, and the consequent oscillation of the lever 38 and the short-circuiting of the regulator through the relay 33, 34 is varied in accordance with the tension of the yarn. If the yarn breaks the regulator is disconnected by the contact of a lever 45, normally supported by the intact yarn, with a pawl 52 which opons the contacts 54, 55. Specification 490,923 is referred to.
Patent GB-1110933-A (GB)
Title: Control mechanism for fuel injection device
Inventor: SKINNER ROBERT THOMAS JOHN
IPC: F02D1/00
Filed: 1964-04-09
Abstract: 1,110,933. Regulating I. C. engines. JOSEPH LUCAS (INDUSTRIES) Ltd. May 14, 1965 [April 9, 1964], No. 14659/64. Heading F1B. A fuel injection control mechanism comprises an inlet manifold pressure responsive bellows 18 moving a pivotally-mounted first lever 22, a pivotally-mounted control lever 24, movement of which determines the fuel delivery and a roller 27 engaging the levers which can be moved between the pivotal axes of the levers by control means to determine the ratio of movement of the two levers. An engine-driven distributer disc supplies fuel to the opposite ends of bore 12 containing shuttle 13 the stroke of which is controlled by the position of plugs 14, 15. The rating of bellows 18 is varied by adjustment of the loading of springs 19, 20. The roller assembly 27 is arranged with two rollers contacting two parallel arms forming the first lever 22 and a single central roller contacting the second lever 24. The position of roller assembly 27 is varied by movement of extension 29 which is connected to a manual or automatic control (not described). Operation. When manifold pressure falls, bellows 18 expands to move the lever system thus reducing the distance between plugs 14, 15. An adjustable pin 30 effects a rapid reduction in fuel delivery when manifold pressure falls suddenly e. g. during overrun conditions. In a modification Fig. 4 a spring-loaded piston 34 subjected interiorly to manifold pressure moves the first lever 22. Arm 36, which may be connected to a thermally-responsive automatic device, is supplemented by a bellows 35 subjected to ambient pressure changes. Bellows 35 determines the position of roller 27 by means of a cam 38 and roller 37 which are positioned so as to be inoperative during the warm-up period. The bellows 35 may be alternatively arranged to alter the position of pivot 23, Fig. 2 or plug 14.
Patent GB-1479423-A (GB)
Title: Microtome and a method of determining the distance between a knife edge and a specimen surface
IPC: G02B21/34
Filed: 1976-04-09
Abstract: 1479423 Microtome adjustment LKBPRODUKTER AB 9 April 1976 [10 April 1975] 14703/76 Heading G2J In adjusting the knife-specimen distance in a microtome, a source of light irradiates a prismshaped knife 2 and the light passing into, and reflected from, surface 2C is reflected back by a mirror 5 on to the specimen 6 as shown. Observation by microscope 3 gives a direct image of the knife and a reflected image from the specimen with a dark area between. This dark area is used to estimate separation of the knife and the specimen.
Patent GB-596223-A (GB)
Title: Improvements in or relating to the manufacture of carbamic acid esters
IPC: C07C271/06
Filed: 1944-08-03
Abstract: Carbamic acid esters of compounds of the choline type having the formula <FORM:0596223/IV/1> where R is a lower alkyl group, R1 is hydrogen or a lower alkyl group, and R11 is an alkyl group of more than three carbon atoms or an aryl group, are prepared by reacting a chloro carbamate of the formula <FORM:0596223/IV/2> with a lower aliphatic tertiary amine.  The resulting chlorides may be converted to other salts by reaction with silver salts. "Lower alkyl" and "lower aliphatic" refer to alkyl groups of less than 4 carbon atoms. Suitable tertiary amines are trimethylamine and triethylamine. Products include N-di-n-butyl (n-amyl, isobutyl or phenyl) carbaminoyl choline chloride, b -N-di-n-butyl carbaminoylethyl triethyl ammonium chloride, N-di-n-butyl carbaminoyl-b -methyl-choline chloride, and N-di-n-butyl carbaminoyl choline sulphate.  They show mydriatic and cycloplegic properties.  In examples: (1) b -chlor-ethyl-chlorcarbonate and di-n-butylamine are reacted in ether at 0 DEG  C., and b -chlor-ethyl-di-n-butyl carbamate recovered and heated at 85 DEG  C. in a closed vessel with trimethylamine to yield b -di-n-butylcarbaminoyl choline chloride; (2) b -chlorethyl-di-n-butyl carbamate is heated at 120 DEG  C. in a sealed vessel with triethylamine and methanol as solvent, solvent and excess amine removed, acetone added to precipitate an inactive fraction, and b -N-di-n-butyl-carbaminoylethyl triethyl ammonium chloride recovered from the filtrate; (3) b -chlorethylchlorcarbonate and diphenylamine are refluxed to give b -chlorethyl-diphenyl-carbonate which with trimethylamine gives N-diphenyl-carbaminoylcholine chloride; (4) b -chlor-isopropyl-chlorcarbonate is reacted with di-n-butylamine and the b -chlor-isopropyl-di-n-butyl carbamate heated with trimethylamine to yield N-di-n-butyl carbaminoyl-b -methyl choline chloride; (5) b -chlorethyl chlorcarbonate is converted with di-n-amylamine to b -chlor-ethyl-di-n-amyl-carbamate which gives N-di-n-amyl-carbaminoyl-choline chloride with trimethylamine; (6) b -chlorethyl-di-isobutyl carbamate is prepared similarly and converted to N-di-isobutylcarbaminoyl choline chloride; (7) di-n-butyl-carbaminoyl choline chloride in water is shaken with silver sulphate, filtered and the corresponding sulphate recovered from the filtrate.
Patent GB-956084-A (GB)
Title: An arrangement for controlling the speed of rotation of the cam shaft of an automatic lathe
IPC: B23Q5/34
Filed: 1962-04-18
Abstract: 956,084. Automatic lathes. ZAVODY PRESNEHO STROJIRENSTVI GOTTWALDOV NARODNI PODNIK. April 18, 1962 [April 20, 1961], No. 14985/62. Heading B3T. In an automatic lathe, an arrangement for increasing the speed of the control cam-shaft during non-productive periods in the work cycle comprises a two-part, one-way clutch, attached to the worm shaft of a worm and wheel drive 8 and 25 of the camshaft, with an outer part 12 which is belt driven from a gear-box 2 and is supported by bearings 17 on a hollow shaft extension 18 of a part 19 of a safety clutch, and an inner part 16 slidably connected with the part 19 by means of a key 20. Rollers 21 located between the inner and outer parts are wedged, in recesses in the inner part during rotation in one direction, under the pressure of a spring 23. The inner part is rigidly attached to a pulley 14 and is beltdriven from an electric motor 3. In operation, the two parts of the one-way clutch rotate in the same direction in unison, driven from the gear-box 2 at a normal machine-operating speed, the electric motor idling under this drive. During the non-productive work period the electric motor 3 may be automatically started by a control drum on which dogs 30 and 31 operate switches 32, and 33 respectively so that with a selected drive ratio between the motor and inner clutch member, the inner part may overdrive the normal drive and so speed up the shaft. Manual operation of the drive may be effected by rotation of the shaft 5 by handle 4, the shaft firstly being axially displaced to disengage the one way clutch and engage the parts 6 and 7 of a claw clutch.
Patent GB-1177265-A (GB)
Title: Fuel Cell and Operation thereof
IPC: H01M8/14
Filed: 1967-03-31
Abstract: 1,177,265. Fuel cell operation. ATLANTIC RICHFIELD CO. 31 March, 1967 [25 May, 1966], No. 14996/67. Heading H1B. The hydrogen permeable metallic membrane of a fuel cell anode is protected from corrosion by the electrolyte by applying a D.C. potential across the cell during periods of lowered hydrogen supply to mantain the membrane negative to the cathode. The potential difference may be 0.5 volts or more, but where the electrolyte is an alkali metal hydroxide it should not exceed the potential at which the metal deposits. During application of the potential, H 2  should be excluded from the membrane, for example by flushing it with an inert gas. If the hydrogen is formed in the fuel chamber by interaction of steam with a hydrocarbon, the hydrocarbon flow may be stopped so that the steam flow expels hydrogen from the membrane. In a particular embodiment fuel cell 10 is divided into 3 compartments by anode 11 and cathode 12 held in position by spacers 13, 14 and 15. The anode comprises porous carbon layer 11  and non-porous, H 2  permeable layer 27 of Ni, Pd or Pd alloy less than 0À0001 inch thick. In normal operation hydrocarbon and steam are supplied to chamber 16, oxidant is supplied to chamber 18 and fused NaOH is present in chamber 17. Water vapour escapes at vent 17a and current is supplied to the external load via switch 24. When the cell is switched off, valve 25 may be simultaneously closed, automatically closing switches 28 and 29 so that cell 30 supplies current to the fuel cell via rheostat 32 and the steam flow expels any hydrogen in the membrane 27, assisted or replaced by inert gas from valve 31.
Patent GB-793009-A (GB)
Title: Lubricating grease compositions
IPC: B01J19/06
Filed: 1956-05-15
Abstract: A lubricating grease composition comprises a hydrocarbon lubricating oil gelled with one or more lithium soaps of hydroxy fatty acids and minor proportions of a water-soluble nitrite or chromate corrosion inhibitor and an oil-soluble organic calcium sulphonate.  The hydrocarbon lubricating oil may have an average molecular weight between 250 and 800 and may be mineral or synthetic, e.g. a bright stock.  The lithium soaps may be salts of hydroxy fatty acids having between 12 and 24 carbon atoms per molecule, e.g. acids derived from hydrogenated castor oil, 9,10-dihydroxy stearic acid, 4-hydroxy palmitic acid, and quince oil acids.  The water-soluble corrosion inhibitor may be an alkali metal, amine, or ammonium nitrite or chromate, e.g. sodium, potassium, lithium or ammonium nitrite, sodium, potassium or ammonium chromate, an alkyl ammonium nitrite such as di-isopropyl ammonium nitrite, or a cyclo-aliphatic amine nitrite such as dicyclohexylamine nitrite.  The calcium sulphonates are preferably calcium hydrocarbon sulphonates such as petroleum sulphonates and may be either neutral or basic.  Optional ingredients mentioned are anti-oxidants such as phenyl alpha naphthylamino.  In an example a grease consists of a mineral oil, lithium 12-hydroxy stearate, sodium nitrite and a basic calcium mahogany sulphonate. Specification 758,493 is referred to.